Online unix course free jobs

I'm in need of a dedicated professional to manage the promo...to manage the promotion and ratings of our EdTech courses on Udemy. Key Responsibilities: - Weekly promotion of our courses - Focusing on blogs and educational websites for course promotion - Handling the full spectrum of ratings and reviews, including: - Collecting new reviews from students - Responding to existing reviews - Improving ratings of courses with low scores Ideal Candidate: - Proven experience in promotions and ratings management on online educational platforms, specifically Udemy - Proficient in engaging and promoting through blogs and educational websites - Adept at managing and improving course ratings through student reviews - Excellent communication skills to handle reviews ef...

Website needs to be upgraded in terms of design and improve how product photos are presented. See attached current website. Additional photos need to be added from image bank. Website has to optimise speed of photos display. Website has to be online before Sunday 21st April 2024

I am in need of a freelancer who can help me extend free lotto club memberships to individuals in the UK. The project is primarily focused on leveraging social media platforms for advertisements. Requirements and Expectations: - I work with affiliates who will engage in social media advertising. Your role will be to oversee and optimize this process. - The social media platforms for advertising are flexible. You can choose the most effective ones based on the audience and user engagement. - The target audience for this campaign includes adults aged 18-24, 25-34, and 35-44. Ideal Skills and Experience: - Proven experience in social media advertising. - Ability to tailor campaigns to different target audiences. - Previous work in the UK market is a plus.

This Agreement is made and entered into as of April 16, 2024, by and between: Abed Tahan, represented by Samir...Agreement may be terminated by either party upon 30 days written notice to the other party. In the event of termination by Client due to Developer's failure to fulfill their obligations under this Agreement, Client shall only be responsible for payment of services rendered up to the date of termination. 8. Confidentiality Both parties agree to keep all confidential information obtained during the course of this Agreement confidential. 9. Entire Agreement This Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior or contemporaneous communications, representations, or agreements, whether o...

This Agreement is made and entered into as of April 16, 2024, by and between: Abed Tahan, represented by Samir...Agreement may be terminated by either party upon 30 days written notice to the other party. In the event of termination by Client due to Developer's failure to fulfill their obligations under this Agreement, Client shall only be responsible for payment of services rendered up to the date of termination. 8. Confidentiality Both parties agree to keep all confidential information obtained during the course of this Agreement confidential. 9. Entire Agreement This Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior or contemporaneous communications, representations, or agreements, whether o...

As a business owner, I'm seeking a skilled digital marketer to manage my company's Ads campaign of lead generation among general consumers. As a Coaching Company we train people on A.I tools like Power BI. We sell our certification course at the most affordable price & certify people as Power BI Expert. Our Audiences are Working Professionals in IT, Sales, Operations, Management, Finance, Accounting, etc. Your Job: - Identifying potential Consumer leads by running free workshop campaign - Giving Quality of leads who can convert after attending our free workshop Milestone : -Quality Leads Target Required Skills and Experience: - Proven track record of successful lead generation in the technology industry - Familiarity with lead generation method...

I am seeking a professional who can produce a comprehensive video course on Bitcoin. You don't need to be fluent in German, but must have a solid understanding of the language in order to fully grasp the task at hand. Key responsibilities include: - Creating a video course lasting 8 hours or more - Covering various aspects of Bitcoin such as: * Introduction to Bitcoin * Bitcoin Wallets * General knowledge about Bitcoin Ideal candidate will have: - Strong ability to understand German - Basic knowledge of Bitcoin - Proven experience in video course production. - The video course exists already in english, it must be copied nearly 1:1 into german - AI is doing the translation from EN to DE and also Text to Speach. NO need for your voice. - A proce...

I'm urgently seeking a well-versed online trainer who can proficiently guide me through mastering Tableau. This assignment needs to start immediately. Here's what I hope to gain from this training: - Thorough understanding of data visualization concepts - Advanced Tableau software skills - Grasping how Tableau interfaces with databases The training will be conducted via video calls, preferably through Zoom, so a reliable and robust internet connection is a must-have. The ideal candidate will be experienced in online training and possess excellent communication skills, adding to a seamless learning experience. Please reach out if you have in-depth knowledge of Tableau and are suited to deliver quality online training ASAP.

I'm looking to establish an engaging, user-friendly online store for water purifiers and similar products. Key Features: - I would like the potential customers to be able to search and filter through products effectively. - I want a review system in place, allowing customers to share their thoughts and experiences. - The shop should have secure payment options to ensure the safety of transactions. - Additionally, a CRM system to manage customer relationships would be beneficial for future marketing. Design: - I envision a vibrant and colorful design that resonates with our environmentally-friendly products. - The design should be lively and inviting, aimed at encouraging potential customers to explore the shop further. Ideal Skills and Experience: - Proven experience in d...

I'm in need of a skilled Django developer to quickly create a 5-page academic website. The purpose of this website is to function as an academic portal, showcasing course descriptions, and research publications. The design should be simple, straightforward, and professional. Key Requirements: - Full-stack experience, particularly with Django. - Proficiency in front-end technologies (HTML, CSS, JavaScript) - Ability to deliver quality work under tight deadlines. Please bid if you are available to start working immediately ITS URGENT

I'm looking for a tutor who can guide me through my college course on computer organization. This course covers a wide range of topics including permission models, system architecture, concurrency, virtual memory, cryptographic primitives, and TCP/IP networking. I need a tutor who can help me understand difficult concepts and prepare for exams. Key Requirements: - Should be knowledgeable in all the topics listed. - Ability to explain past exam solutions. - Experience tutoring in computer organization or related subjects. - Able to communicate via instant messaging for convenience. - help in exam preparation Here is a list of all the topics covered in this course Building and Introduction - Basics of .o, .a, .so files, dynamic/static linking, and makefiles. Acco...

My company offers digital marketing services, p...#C400FF (striking) o #9F3434 (focus 1) o #02746D (focus 2) The logo should not contain any text. The number "3" could be an inspiration, as we present 3 basic USPs. However, this is not mandatory. I am open to the style direction. The logo must be clearly visible against both a light (white) and a dark background. I need it as a PNG file with a transparent background. Important: Of course, the logo must be absolutely unique and all rights to it must be retained. All standard designs from Canva or similar tools that you have already seen a thousand times will be rejected without comment. If successful, follow-up orders are conceivable. I run other websites and always need infographics and illustrations. ...

I'm looking for an experienced website builder to create an online platform for selling meat. The site should be user-friendly, secure with all necessary features for an E-commerce platform. Key Features: - Product Catalog: The website will need to display a range of meat products with detailed descriptions and pricing. - Shopping Cart: An intuitive shopping cart function that allows users to add and remove items, as well as calculate their total cost. - Payment Gateway: A secure payment gateway to facilitate smooth transactions. - Delivery Schedule (Slots): I'll need customers to be able to choose from available delivery slots for their orders. Ideally, I'd like the website to be built with scalability in mind, in case we wish to expand the product range or servic...

I'm looking for a professional who can help me set up my video coaching program on Digistore. The program I'm offering is designed for beginners in the subject area. Key requirements for this project include: - Setting up the course on Digistore as a seller - Providing a seamless download experience as the program includes downloadable resources Ideal candidates for this project should: - Have experience in setting up courses on Digistore - Be able to cater to beginner-level audiences - Be able to integrate and manage downloadable resources on the platform.

I need an online store data extraction specialist to pull key information (product name, price, and barcode number) from a particular online store. - The extracted data should be delivered in an Excel spreadsheet. - This is a one-time task; there is no need for continuous extraction. It's essential that you're proficient in web scraping techniques, able to navigate through the store's pages, and extract the right data accurately. Experience with online store data extraction is preferable. Please indicate any relevant past projects in your bid. Looking forward to working with a pro who can deliver quality results efficiently.

I'm in need of a website system that can allow students to take time-limited tests. The platform should be designed exactly like this: The website has its own sign up and payment using xe The ideal candidate for this project should be comfortable with web development and have experience in building similar systems. In addition, a good understanding of user experience and the ability to create an intuitive and user-friendly interface is key. Please provide examples of previous work that showcases your skills in this area.

Confirmis () is a Singapore-based business information provider specializing...designed to overcome perennial lack of data (let alone quality data) to support effective decision-making, particularly in developing economies. As a Site Verifier, you will be responsible for verifying a company’s existence through visual data by conducting a site visit to ensure that we provide reliable and accurate information to our client. 1. We need a local Cambodian to support us on an online research task 2. When will you need to get started and complete it? - it takes around 1-2 hours only and should be done by April 17 3. Work Scope: - Research news/public news of an individual (having consent to do it) - Research the media news, we will provide the template later 5. The budget: USD 7

I'm seeking a Personal Assistant who can aid me in daily tasks such as scheduling appointments and conducting research tasks, ideally with a degree of familiarity in the online education industry, although this isn't a hard requirement. Daily responsibilities will include: - Managing my schedule - Undertaking research tasks For this role, the ability to use the Microsoft Office suite is necessary. Additional knowledge of the Classplus app would also be beneficial but is not mandatory. Ideal candidates will be fluent in English and able to commit to three hours of flexible work each day. Although some experience in the online education industry is preferred, I value dedication and willingness to learn above all else.

I need a paper written for a graduate-level course on a topic of my choosing. The catch? The paper can not contain any AI-generated text and must sound entirely human-written. Ideal Skills and Experience: - Proficient in Graduate-Level Academic Writing: The freelancer should have a strong background in the kind of writing expected at a graduate level. - Excellent Writing Skills: The writer should be able to craft a high-quality paper that appears to be human-written. - Understanding of Citation Styles: As I would like the paper to be formatted in Chicago style, the freelancer should be familiar with this citation style. The word count should be at least 1000 words and should be able to pass iThenticate AI Detetcion.

Please see .pdf file for full explanation. I am seeking a skilled developer to create a sophisticated online booking form. This form will require the unique capability to calculate distances between both residential and business addresses. Key Features: - The form should consider distances with traffic considerations, hence requiring a level of accuracy beyond simple point-to-point measurements. - It should also be intelligent enough to accommodate multiple non-consecutive destination inputs. Ideal Skills: - Strong understanding of geolocation APIs for accurate distance calculation. - Prior experience in designing intelligent online booking forms. - Proficiency in UX design to ensure user-friendly interactions. - Understanding of traffic patterns will be a significant pl...

Need a PHP backend developer to fix our backend. We have a server that our App uses for user to get data, and for Admin to manage data and users. Suddenly the backend has a bug and neither app nor admin can logon. We can access via FTP of course, but not via normal logon. Original developer is unavailable, so we need an expert to troubleshoot it. Hopefully it is a small bug. We have some info from tech support on the possible nature of the bug. We have already searched for malware but did not find any.

URBAN CAR START-UP I am currently developing an ultra-lightweight and highly energy- and resource-efficient urban car, and - having now completed 2D drawings of all its composite primary components - I now urgently require a digital model of the vehicle in Rhino. In addition to this - and having already taken an introductory course in Rhino - using this model as a starting point I would also want 1-1 tuition in my office at the attached address in London's Westbourne Grove. [Removed by Freelancer.com Admin for offsiting - please see Section 13 of our Terms and Conditions]

I am applying for an airline pilot training course and need a professional CV and cover letter. While I don't have any prior flying experience, I am looking to emphasize the following key qualities and skills in my application: - Leadership and Teamwork - Problem-solving and Quick Decision-making - Attention to Detail and Safety Awareness The ideal candidate for this job should have experience in aviation or a similar field, and be able to craft a CV and cover letter that effectively showcases my potential as a future airline pilot, I would love to take part in this training course. The ability to tailor the application to the specific requirements and expectations of this training course will be crucial.

I've recently got into a comprehensive digital marketing course with the primary objective of generating leads and sales. I'm currently looking for a professional who can effectively promote and advertise this course. Key Tasks: - Create targeted advertising campaigns: I need someone who can work on creating and managing advertising campaigns to attract potential customers interested in digital marketing. - Utilize appropriate platforms: Your job would require you to choose the right advertising platforms that would best reach our target audience. - Lead generation: The main focus of this project is to generate leads and drive sales, so the successful bidder should have a proven record in this area. Ideal Skills and Experience: - Digital Marketing Expertise: A de...

As a project owner, I am seeking a talented and experienced ed-tech professional to create a video series training course. This course is geared towards entrepreneurs with the aim to educate on generating revenue using AI in business. I require a comprehensive, easy-to-understand content that makes AI practical and profitable. Key Tasks: - Develop a video series around the topic "AI in Business" - Focus content on revenue generation models leveraging AI - Include real-life applications and case studies Ideal Skills: - Previous experience in creating educational content - Deep understanding of AI and its application in business - Ed-tech background or experience - Entrepreneurial mindset or experience - Strong video production and editing chops.

I am in need of a music production specialist who can expertly navigate the integration of MainStage with Pro Tools. I have set up various patches in Mainstage, and and need to use these patches to record in Pro Tools. I'd like to assign different Mainstage patches to several different MIDI tracks in Pro Tools and record simultaneously, if possible. The ideal candi...navigate the integration of MainStage with Pro Tools. I have set up various patches in Mainstage, and and need to use these patches to record in Pro Tools. I'd like to assign different Mainstage patches to several different MIDI tracks in Pro Tools and record simultaneously, if possible. The ideal candidate will have experience integrating MainStage with Pro Tools using AIC drivers. This is, of course...

I am looking for a skilled developer who can create an online programming contest site similar to VJudge. Key Features: - **User Registration and Login**: Users should be able to easily create accounts and login. - **Programming Problem Submission**: The site should allow participants to submit their code for problem solving. - **Automated Judging System**: The platform should be able to automatically evaluate and judge the submissions. - **Discussion Forum**: There should be a provision for a discussion forum where participants can interact. - **Ranking System**: The site should have a ranking system based on participant performance. - **Multiple Access Levels**: Users should have varying levels of access, such as leader, manager, and member. - **Group Creation**: The platform sh...

I'm in need of a professional who can develop a business website for me with the primary feature being an online store. It's intended for commercial use and will be a key part of my business operations.

I need help with simple copying and pasting tasks from online directories. The data needs to be organized by category. The primary task includes: - Copying data from various online directories - Pasting the data into an Excel/CSV file - Organizing the data by categories Ideal skills: - Excellent attention to detail - Proficiency in data entry and Excel/CSV - Understanding of data categorization The task is straightforward and doesn't require any complex skills. I am looking for someone who can deliver accurate results in a timely fashion.

I urgently need an expert in data mining to execute a machine learning project using the RapidMiner tool. Two different algorithms that we have covered in the course are to be used in order to ascertain the optimal model. Key Tasks include: Task: Perform supervised machine learning/data mining using TWO different appropriate datamining algorithms learnt in the course and determine the best model. You can use either XLMiner OR RapidMiner tool. Procedure to be followed: A. Select a dataset having minimum 500 rows of data and should have at least 6 predictors (after cleanup). - Implement Supervised Machine Learning/Data Mining - Work possibly with Numerical Data, Categorical Data, or Textual Data. Further clarification will be provided later. - Compare models to determine the ...

...looking for a talented online marketing professional to amp up our sales. The primary goal here is to enhance our current sales figures. Key Responsibilities: - Develop a comprehensive online marketing strategy that focuses on boosting sales specifically. - Execute campaigns across various platforms that you consider will be most effective. Ideal Experience and Skills: - Proven track record in online marketing, particularly in the e-commerce sector. - Demonstrable experience in driving sales through online marketing. - Strong analytical skills to measure effectiveness. - Exceptional communication skills to create and present detailed project proposals. Your application should focus on showcasing how you could help me achieve stronger sales figures throu...

I require a professional who has a keen eye for modern and sleek branding to create several items for my online TV channel. The various branding content needed includes: - Logo design - Thumbnail templates - An striking intro animation - Social media post content templates - Engaging outro animations - Clean and modern lower thirds The branding needs to cater to an audience aged between 36-60 years. I'm seeking a freelancer with a modern aesthetic and previous experience with television or digital media branding. Proficiency in motion graphics for the intro and outro animations is also a must. This project calls for an innovative outlook and an ability to design with a mature audience in mind.

I'm in need of an experienced game developer to create a mobile game. This game needs to be a fast-paced action game designed for mobile. Key Requirements: - Game Type: The game will be an action game. - Platform: The game must be developed for mobile devices. - Multiplayer: It should support online multiplayer functionality. Ideal Skills: - Proficient in game development for mobile. - Prior experience in designing and developing action games. - Familiarity with implementing online multiplayer features. - Able to optimize game performance for mobile devices. Please provide me with your relevant experience and some examples of your past projects. Let me know your thoughts on how you'd approach this job.

I need help with a comprehensive online advertising campaign, focusing on Facebook, Google Ads, Instagram, Snapchat, TikTok. The objective is to Increase brand awareness, Drive website traffic, and Generate leads. Key job requirements include: - Proficiency in online advertising strategies - Experience in managing and creating successful campaigns on Facebook, Google Ads, Instagram, Snapchat and TikTok - Proven ability to meet objectives such as increasing brand awareness, driving website traffic and generating leads. I'm looking for a freelancer who is a strategic thinker, creative and data-driven. You should be able to provide me with a detailed plan of how you intend to execute the campaign and what success will look like. Your plan should be tailored to the ...

I am looking for an experienced instructional designer to help develop eLearning modules for intermediate users. These modules will cover topics such as software usage and professional skills development. Key responsibilities: - Create engaging learning activities and compelling course content - Identify the target audience's training needs - Apply tested instructional design theories, practice, and methods Ideal Skills: - Proven working experience in instructional design - Excellent knowledge in learning theories and instructional design models - Lesson and curriculum planning skills Let's infuse your expertise into a meaningful learning experience for my audience. Apply today!

I'm seeking an online marketing professional to increase the sales of our used pallet racking. The main goal of this project is to significantly boost the sales of our pallet racking products. Key Selling Points: - Our pallet racking is made of high-quality materials, ensuring durability and safety - We offer customization options to meet unique customer needs - Our prices are highly competitive in the market Ideal Skills and Experience: - Proven track record in online marketing, particularly in e-commerce - Experience in increasing product sales through marketing campaigns - Understanding of the industrial equipment or warehousing industry would be a plus When submitting your proposal, please highlight your previous experience in similar projects. This will help us ...

...automation tools and frameworks (CI/CD pipelines). - Conduct systems tests for security, performance, and availability. - Develop and maintain documentation and systems diagrams. **Required Skills and Qualifications:** - Proven experience as a DevOps Engineer or similar software engineering role. - Proficient with AWS cloud services. - Expertise in Docker and Kubernetes. - Strong background in Linux/Unix Administration. - Experience with CI/CD systems. - Proficiency in version control tools like GIT. - Strong problem-solving skills and ability to manage complex and urgent issues. - Excellent communication skills and ability to work independently on projects. **Preferred Qualifications:** - Certifications in AWS, Kubernetes, or other DevOps tools are highly desirable. - Prior expe...

Headline: ORM Expert - Boost Our Online Reputation with Verified Reviews (500 Minimum) Project Description: We're seeking a highly experienced Online Reputation Management (ORM) specialist to develop and execute a comprehensive strategy for our business. Key Responsibilities: • Implement a white-hat ORM strategy to improve our brand image across various online platforms. • Manage review acquisition on designated websites (we'll provide links). • Secure a minimum of 3-5 verified, positive reviews daily per website (total target: 500 reviews). • Ensure all reviews comply with platform guidelines to minimize removal chances. • Monitor online presence and identify potential reputation issues. • Proactively address negative rev...

We are looking for a tester to cooperate with, who will ensure the quality of our online games in the countries of Africa. The person will be responsible for testing online casino games and reporting encountered errors. The projects will be short and may occur irregularly. We will settle accounts for individual projects, but we value collaboration with one committed person. The tester should be available to complete a project within 1-2 days. The equipment required to perform the tests includes a smartphone with Android and iOS, as well as access to the internet.

I'm currently in need of 2 mid-level sales representatives to aid in the sale of advertising space for my online newspaper. This is a Commission only job but it could prove quite lucrative for the right candidate. Key Responsibilities: - Approach leads with provided information about our platform, and services. - Maintain and grow existing client relationships. - Close sales and achieve quarterly targets. - Update CRM with customer interactions and transactions. The ideal candidates for this project would have: - Proven experience in sales - Understanding of the advertising industry is a plus - Ability to work independently and collaboratively - Excellent negotiation and communication skills - Strong organizational and time-management abilities

I'm seeking an online [western ,pop english singing]vocal coach to help beginners improve their singing skills. The focus of the training will include: - Teaching proper breath control techniques - Developing pitch accuracy - Working on vocal range expansion Ideally, you should have experience working with beginners and be able to provide supportive and encouraging guidance. The ability to effectively communicate and demonstrate techniques online is crucial. Your aim should be to nurture a beginner's passion for singing and build a solid vocal foundation.

I'm seeking a skilled developer to create an online lottery platform aimed at individuals. Our platform will predominantly offer number draw and instant win games. Please watch the video from 27 minutes : I need Exact same look and feel and same Functionality in PHP

I'm in need of an assistant who can help me make a copy of an online course. The course is more than 60 minutes long, and needs to be entirely recorded using Loom. Your main tasks will be to: - Using my loom account you will screen record all the videos in the course (over 30 of them) - You will download all the supporting documents and organise in a google file I'm not looking for any video editing, just a straightforward copying of the course. Familiarity with Loom and Google Docs is a big plus.

...developer in monthly basis* I require a developer skilled in PHP and Android development to build an interactive educational application. This app will primarily be geared towards video classes, pdf material and incorporate test series. Key Features: - Video Classes: Users should be able to stream educational video material. - PDF Viewer: The app should feature a built-in pdf viewer for reading course materials. - Test Series: Users should have the ability to take a series of tests as part of their distance learning experience. - User Registration and Login: The app must have a user-friendly registration and login feature. Ideal Skills: - Proficient in Android development, specifically in designing apps for educational purposes. - PHP development experience. - Understanding ...

I am looking for a professional with expertise in developing e-commerce websites, particularly for pet products. - The website should have a user-friendly interface, allowing customers to easily navigate through product categories. - Multi-platform support is crucial; the site should be accessible and functional across different devices. - The site should have a robust search and filter function, enabling customers to find what they need quickly. - Integration of a shopping cart feature is necessary for customers to conveniently make purchases. - Customer reviews are a critical feature for establishing trust and credibility in the brand. The products I'm planning to sell are targeted towards both dog and cat owners. The range consists of approximately 10-15 items, meaning that the s...

I'm looking to get a powerful and compelling logo designed for my online restaurant. The logo should convey the restaurant's character and should stand out in the digital marketplace. - Preferred Colors: The logo should predominantly use red, yellow, and orange, creating a vibrant and engaging aesthetic. - Desired Style: The logo should strictly adhere to a minimalistic style, enhancing its clarity and impact. - Imagery: Include unique elements such as a taco and a ghost in the logo design. Ideal freelancer should have a knack for developing striking visuals and a strong understanding of color theory and minimalist design. To be a good fit for this task, you should have experience in illustration and logo design, specifically with food-based businesses. A creative appr...

I need an experienced web developer who can help me create an online casino website for real money. Key Requirements: - The website should offer a wide variety of gaming options including slot machines, blackjack, roulette, live table games, and sports bets. - The website should support various payment methods such as credit/debit cards, e-wallets, and cryptocurrencies. - Users should be able to register and create accounts. Additionally, a VIP account feature should be available for special users. Ideal Skills: - Experienced in online casino website development - Proficient in integrating payment gateways - Well-versed in creating user account systems - Familiar with the security measures needed for real money transactions - Knowledgeable in creating a visually appealing a...

I am looking to build an informational website primarily targeted at students. The website needs to be user-friendly and intuitive with a clean layout and easily navigable sections. Key Features Required: - Course Information: Details about various courses should be available and well-structured. - Resources and Materials: Offering relevant resources such as textbooks, lectures, or useful links for each course. - News and Updates: A dedicated section for the latest news and updates about the courses or related educational fields. - Search functionality with conditional filters - User registration and profile - Forum Ideal Skills and Experience: - Experience in creating informational websites, preferably in the education sector. - Expertise in designing user-friendly a...

So glad you're here! I am on the prowl for a skilled video creator who can bring to life a set of online courses I have prepared for individuals looking to represent themselves in court. This project will hinge on your ability to create striking, thought-provoking visual elements that effectively use my script to educate and inspire. So, here's what I need: 1. **Mixed Media Approach**: I envision this course featuring a mix of animated, whiteboard and some live-action videos, crafting an engaging and dynamic learning environment. The variety will keep our learners attentive and make the process fun! 2. **Detailed Animations**: Your ability to create detailed and nuanced animations that captivate will be put to good use. These animations should serve to clarify co...

Wordpress Learnpress Reteak custom need now if our site student re-take course than certificates is reset i want to stay certificates when user re-take course